express.Application is compatible with http.createServer

Add test case: express.Application is compatible with http.createServer

express/express-tests.ts

@@ -1,4 +1,5 @@
 /// <reference path="express.d.ts" />
+/// <reference path="../node/node.d.ts" />
 
 import * as express from 'express';
 var app = express();
@@ -91,3 +92,10 @@ app.listen(3000);
 
 const next: express.NextFunction = () => {};
 const nextWithArgument: express.NextFunction = (err: any) => {};
+
+/**
+ * The express.Application is compatible with http.createServer
+ */
+
+import * as http from 'http';
+http.createServer(app);